Liquid-mixing apparatus.



l J. J. MATHESON.

LIQUID MIXING APPARATUS.

APPLICATION FILED PEB. 27, 1911.

1,0%,L Patented Aug. 27, 1912.

TED sTATEs PATENT oEEioE.

JOHN J. MATHESON, OF TEANECK, NEW JERSEY, ASSIGNOR TO W'EST DISINFECTING' COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

LIQUID-MIXING APPARATUS.

Application filed February 27, 1911.

To all 'whom t may concern.'

Be it known that I, JOHN J MATHEsoN, a citizen of the United States, and resident of Teaneck, in the county of Bergen and State of New Jersey, have invented a new and useful Improvement in Liquid- Mixing Apparatus, of which the following is a specification.

My invention relates to a liquid mixing apparatus and more particularly to an apparatus adapted to be used Where a liquid disinfectant, such, for example, as chloronaphtholeum, is to be mixed with water under pressure as -the water is drawn from the main.

The object is to pro-vide for the introduction of a predetermined propor-tion of disinfectant to the amount of water under varying pressures of water discharge and to provide for a thorough intermingling of the disinfectant throughout the mass of water.

A practical embodiment of the invention is represented in the accompanying drawings in which,

Figure 1 is a view of the apparatus in side elevation, partly broken away to show the interior of the disinfectant reservoir and.

the suction pipe therein. Fig. Q is a vertical section of the same, the nozzle of the reservoir only being shown, and Fig. 3 is a transverse section in the plane of the line A-A of Fig. 2.

1 represents a reservoir for holding a suitable liquid disinfectant and is here shown having a tapered top provided with `channel extending through the head piece and composed of a part 8 and a larger part 9, the latter having an internal screw-thread for the reception of the screw-threaded stem 10 of a needle valve 11, which valve is intended to determine the amount of disinfectant which shall pass from the channel 7, into the part 8 ot' the diagonal channel Specification of Letters Patent.

Patented Aug. 27, 1912.

Serial No. 611,066.

to be introduced into the water. The stem ofthe needle valve 11 is packed by a stufflng-box 12 and the needle valve is operated by means of a hand wheel 13. The upper portion of the head piece 3 is provided with a central opening 14 extending through from end to end and with numerous small openings 15 also extending through from end to end and located preferably in a series around the central opening 14, as clearly shown in Fig 3. The openings or channels l? llive theirforward ends tapered as shown al Within the central opening 14, there is located a tapered ejector nozzle 17, the discharge end of which is spaced from the surrounding wall of the interior opening '14 and the inlet end has a screw-threaded engagement 1S with the inner wall of the opening 14.

At the rear -or ent-rance end of the upper portion of the head piece 3, there is located a disk 19 held in position along its outer margin between the end of the upper portion of the head piece 3 and an interior annular shoulder 20 formed on a hollow cap or casing 21, one end `of which screws onto the end of the upper portion of the head piece 3 and the opposite end of which is provided with an internal screw-thread 29. for convenience in attaching thereto a tube, not shown, leading to any suitable source of water under pressure.

At the opposite end of the upper portion of the head piece 3, there is an elongated hollow cap or casing 23, one end of Whcn is screwed on to the end of the upper portion of the head piece 3 and the opposite end is screw-threaded, as shown at 24, for convenience in attaching thereto a hose for conducting the disinfecting mixture to the point it is to be used or drawn for use. Within the hollow casing Q3, there is located an ejector nozzle Q5 of substantially uniform diameter with the exception of a contracted portion 25* at its inner end, the said inner end of the nozzle being provided with a screw-threaded boss 9.6 by means of which it is ,screwed into the end of the upper portion of the head piece 3 a short distance in advance of the small end of the ejector noz zle 17.

Between the small end of the ejector nozzle 17 and the inner end of the nozzle 25, ,the portion 8 of the diagonal channel through the head opens into the opening 14 in the upper portion of the head.

The disk 19 hereinabove referred to is perforated to correspond to the several openings or channels 15 through the upper portion of the head piece 3 and is given a limited rotary movement to regulate the extent of. opening between the interior of the cap or casing 21 and the several channels 15, by means of an elongated slot 27, see Fig. 3, through which slot a set screw 28 extends to look the disk 19 in the desired rotary adjustments.

In operation, -the reservoir having'been supplied with disinfectant and the cap or casing 21 having been suitably connected with a water supply under pressure and the disk 19 rotated to 'leave the channels 15 wide open, the water under pressure will rush not only through the ejector nozzle 17, producing suction in the diagonal channel 8, but will also rush through the channels 15 and around the ejector nozzle 25 mingling finally with the water which passes through the ejector. The needle valve 11 may be then gradually opened to allow the suction 'pro'- duced by the ejector to draw the disinfectant from the reservoir 1, past the valve G and up through the'tubes 5, 4 and 7, into the channel 8, where it is thrown into the water passing from the ejector nozzle 17 into the nozzle 25 and finally issues mingled with the ejector stream into the center of surrounding jets, or a thin layer of water from the several channels 15.

The strength of the mixture, that is, the relative proportions of disinfectant and water, may be tested, and the needle valve 11' may be opened or closed to vary the strength as required and the disk 19, provided thepressure and ow of water is-too free for the purpose, may lie-rotated more or less to regulate the amount of water Which-shall pass through the lchannels 15, the coperaltion of the two devices, to rWit: the rotary disk or damper 19 andthe needlevalve.`

serving 'to regulate the strength of the mixture to the desired degree of accuracy.

The device 1s a simple one and eminently practical for use as it may be adjusted sat-' isfactorily to all the varying pressures of different water supply systems and yet the strength of the mixture, disinfectant and water, may be maintained.

It is obvious that the disk or damper 19, having been once set for the pressure of Water in a given supply system, all that is required to determine the strength of the mixture will be the operating of the needle valve .11 to allowthe proper amount of disinfectant to enter the ejector stream.

' What I claim is: Y

1. A liquid mixing apparatus comprising a tapered nozzle,- a substantially straight nozzle in alinement therewith, channels surrounding the tapered nozzle, means for directing a liquid under pressure to said channels and tapered nozzlev and means for directing a disinfectant into the space between f vin alinement and spaced apart, casings attached to the opposite ends of the head piece, a channel through the said head piece independent of the tapered nozzle, means for opening and closing the channel and means for vsupplying a disinfectant to the space between the nozzles.

4. A liquid mixing apparatus comprisinga head-piece having an opening therethrough independent of the central opening,a tapered nozzle located in said central opening,acas ing attached tothe end of the headpieoe, a rotary perforated disk held in position between the said casing and end of the head piece for opening and closing the said opening independent of the central opening and means for directing a disinfectant into the said central opening. a

5. A liquid mixing apparatus comprising a head piece provided with a stem for attaching it to aA reservoir, the said head piece being provided with a diagonal conduit therethrough and a conduit along its stem -meeting the said diagonal conduit therethrough. the said head piece being furtherv providedv with a central opening in its upper portion for the reception of a tapered nozzle and with openings or' channels therethrough independent of the central opening a substantially straight nozzle in alinement with the4 tapered nozzle and spaced therefrom, means for opening'and closing the said channels through the head piece independent ofthe central opening and means for opening and closing the diagonal conduit in the head piece.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this ninth day ot February 1911.

' JOHN J. MATHESON.

' VVitnessesi F. GEORGE BARRY, HENRY C. THIEME 

